问题
补全对话，情景问答
情景对话，填入适当的单词、短语或句子。
A: Good morning!
B: 1._____!
A: How are you?
B: 2._____.Thank you. 3._____?
A: I'm fine, too.
B: Oh, 4._____?
A: It's a clock.
B: 5._____?
A: It's blue and white.
B: Thank you.
答案
1. Good morning
2. I'm fine
3. And you/How are you
4. What's this in English
5. What color is it
(答案不唯一)
服从t(n)分布，则
等于
． 
． 
．